Multiplier for looms



March 16 1926. 1,576,706

1.. E. BAGWELL ET AL MULTIPLIER FOR LOOMS Filed July 14, 1924 PatentedMar. 1%, 1926..

UNI-TE s'rars 1,576,706 PTENT OFFICE.

LANDRUM EARL BAG-WELL, OF DRAY'I'ON, AND DAVID C. JONES, 0F GREENVILLE,SOUTH CAROLINA, ASSIGNORS TO GROMPTON 8c KNOWLES LOOM WORKS, OFWORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS,

MULTIPLIER FOR LOOMS.

Application filed July 14-, 192 1. Serial No. 725,773.

ToaZZ whom it may concern:

Be it known that we, LANDRUM'. E. BAG- WELL and DAVID C J ONES, saidBAGWELL residing at Drayton, county of Spartanbur State of SouthCarolina,said J ONES residing at Greenville, county of Greenville, Stateof South Carolina, citizens of .the United States, have invented a newand useful Multiplier for Looms, of which the following IS aspecification. V

This invention relates to patternmechanism for looms and moreparticularly to multipliers for such mechanism.

In weaving such fabrics as handkerchiefs which have a body of one weaveand a border of a second weave, it is desirable to weave the body, whichmay be a plain weave, with a single bar of pattern chain and the border,which may be fancy, with a comparatlvely short pattern chain controlledby multiplier mechanism. On the so-called double-1ndeX dobby it ispossible to weave the body of the fabric with the pattern chainstationary, the chain being started in motion when the border is reachedby means of a multiplier or pick counter.

Our invention relates more particularly to a pattern mechanism havingmultiplying, controlling, counting and drivmg elements 011 the sameshaft with the pattern cylinder.

Another object of our invention is to provide a multiplier with a pairof removable discs which may be replaced by other discs of differentsizes so that the factor by which the mechanism multiplies may be variedas desired, the motion transmitting device interpo sed between the discsbeing movable to cooperate with various sizes of dlscs.

A still further object of our invention 18 to provide a convenient handcontrol for the multiplier by means of which the latter mav bedisconnected from the driving portion of the loom and actuated manually.

With these and other objects in view which will appear as thedescription proceeds, our invention resides in the combination andarrangement of parts hereinafter described and set forth in the claims.

Referring to the drawings,

Fig. 1 is an end elevation of the lower portion of a dobby having ourinvention aplied thereto as viewed from the end of the Fig. 2 is a frontelevation of the mechanism shown in Fig. 1, the manual controllingdevice being shown in section,

Fig. 3 is a detailed perspective of the actuator disc and transmitter,

Fig. 1 is a diagrammatic view showing the as hearings to receive shaft12. The dobby cylinder 13 is fastened to the shaft 12 and is arranged inthe present form of the invention to receive a double index dobbypattern chain.

The driving element of the multiplier com prises a sprocket pinion 14:(see Fig. 2) which isfastened by set screw 15 to sleeve 16' extendingfrom a drum 17, the sleeve 16 rotating freely in bearing 18 and beingloosely mounted on driving shaft 19 which may extend parallel to the layof the loom. Located in'the drum 17 is a member 20 which is secured totheshaft 19 by set screw 21' and has pivotally mounted thereon handoperated lever 22 one end of which is normally pushed outwardly bycompression spring 23 and the other end of which is provided with ahandle 24:. The periphery of the drum 17 is provided with a notch 25which normally receives a portion of lever 22. During the normaloperation of the loom constantly driven mechanism not shown drivespinion 1 1 and through the mechanism described rotates shaft 19 everysecond pick. 7

As seen in Fig. 2 shaft 19 passes through a bearing 27 and has securedthereto a worm 28 which always meshes with worm gear 29 mounted on shaft12. As shown in Fig. 5 the hub of the worm gear 29 is extended as at 30and has secured thereto actuator disc 31. Slidably mounted on shaft 12is a clutch member 32 having a groove 33 therein to receive the fingersof a clutch arm 34. Lugs 35 extend from the member 32 through a guide 86fastened to shaft 12 and are as placed as to be movable into operativerelationship with lugs 33" formed on wormv gear The multiplying elementof the device comprises a multiplying disc 38 provided with teeth 39which are preferably double the number of the factor by which theirechanism multiplies the rotation of shaft 19. As seen in Fig. 3 theactuating disc 31 is provided with a pair of teeth 40 which extendlaterally beyond an annular run ll preferably formed integral with thedisc 31. The discs are caused to move in unison periodically by atransmitter l2 mounted on the lower end of an arn adiustably fastened torod l l fastened to the dobby frame. As shown herein the transmitter isprovided with six teeth, alternate teeth being of full width, asindicated at in Fig. 3 and the intermediate teeth being shorter, asindicated at 4:6.

The transmitter and actuating disc are shown in an intermediate positionin Fig. 3 where it will be seen that the axis l? of the transmitter isso placed with respect to e shaft 12 that two of the long teet e5 e1 theannular run ll on opposite sides of the axis a"? so as to preventrotation of the trans mitter in either direction and that one of theshorter teeth l6 extends ino the path of the advancing lug 40. The lugs40 are spaced far enough apart to receive the long teeth of thetransmitter 4-2.

The controlling and counting elements of the multiplier comprise a s)rocket 18 which receives a pattern chain l and is fastened to themultiplying disc 38 so as to rotate therewith. Pivotally mounted on roda l is a lever 50 the free end of which extends over the chain 4.9 inposition to be lifted by a ball 51 on the chain against the action ofspring 52 interposed betweena collar 53 on the rod 44 and said lever.Extending upwardly from the lever 50 is an arm 55 having secured theretoa stud 56 movable freely in a slot 57 formed in lever 58 which ispivoted at 59 to an arm 60 adjustably secured to the rod 44. The otherend of lever 58 is slotted as at 61 to receive a bolt 62 carried by theclutch arm 34 and by means of which the position of the latter may beadjusted.

Under normal operation, with the hand lever 22 as shown in Fig. 2 andthe clutch member 32 disengaged, as shown in Fig. 5, the shaft 19 willrotate once for every second pick of the loom and worm gear 25) with theactuator disc will rotate idly until one of the lugs 40 engages thetooth extending into the path thereof. The transmitter as will then begiven a partial rotation and one of the teeth 45 will come between thelugs 40, the teeth of the transmitter l2 at the same time being in meshwith the teeth 39 of the multiplier disc. As the actuator disc 31continues to rotate the transmitter finishes its motion having passedthrough ird of a revolution. The motion imto the mu tiplier disc movesthe patrain l9 through one space and this on will continue until ball 51lifts or 50, at which time the latter will be raised to swing the lever58 in a countercrosswise direction and the clutch arin ell will move thelugs into the path of the AS the worm gear 29 continues to rotate, shaft12 will move and the ren'iaining bars of the dobby chain will be broughtsuccessively to position to weave the border of the fabric. It will beunderstood that as long as lever 50 is in its lower position the lugs 35of the clutch member 32 will be out of contact with the lugs so thatshaft 12 remains at rest with one o the l ars of the dobby chain underthe ling is. This bar may be pegged so as to produce a plain weave.

The actuating disc will continue to rotate and cause the intermittentmotion of the multiplier disc so that the multiplier chain will movewith the pattern chain. linen the end of the border has been reached,which will be indicated by the lastof the balls 51, the lever 50 willdescend and the clutch member 32 will be moved out of driving contactwith the worm. gear 29. This change occurs as the bar in which the plainweave is to be produced again comes under the dobby lingers. Thus itwill be seen that the disk 38 multiplies the rotation of shaft 19 andthe chain ll) counts the multiplications, the product of the factor, inthis instance eight, and the number of bars in chain 49 equalling therotations of shaft 19 vhich occur while the border is being woven.

It will be observed that both actuating and the multiplying discs arereadily removable so that the same may be replaced by other discs havinga greater or lesser multiplying factor and that the arm 4L3, beingadjustably movable about rod at, can be moved so that the transmitter l2can be properly placed for all sizes of discs.

When it is desired to operate the mechanism by hand the handle 24 of thelever 22, as shown in Fig. 2, will be moved to draw the said lever fromnotch 25 after which the shaft 19 can be rotated independently of thesprocket 14c and the drum 17. it is desirable to be able to do thiswhere it is neces sary to correct a mispick of the loom.

From the foregoing it will be seen that l: have provided a multiplierhaving driving, multiplying, counting and controlling elements all onthe same shaft and so arranged that the factor by which the multiplyingis accomplished may be varied by interchanging the discs and alteringthe position of the transmitter. Also the device may be disconnectedfrom the loom so as to be operable manually.

Having thus described our invention it will liid be apparent thatchanges and modifications may be made therein by those skilled in theart without departing from the spirit and scope of the invention and wedo not Wish to be limited to the details disclosed herein but What weclaim is:

1. In pattern mechanism for looms, a pattern chain cylinder, anactuating disc having a regular motion, a multiplying disc, a

transmitter cooperating with the discs to cause both discs to move inunison periodically, mechanism movable to cause the pattern chaincylinder to move with the actuating disc, and means controlled by themultiplier disc to move said mechanism to cause the pattern chaincylinder to move With the actuating disc.

2. In pattern mechanism for looms, a pattern chain cylinder, anactuating disc receiving a regular motion, a'multiplying disc, atransmitter cooperating with the discs to effect temporary joint motionof the discs, means to support said transmitter to permit bodilymovement thereof with respect to the discs, and means controlled by themultiplying disc to connect the pattern chain cylinder with theregularly moving actuating disc.

In pattern mechanism torlooms, a pattern chain cylinder, an actuatingdisc having a regular motion, a multiplying disc movable concentricallywith the actuating disc, a pair of lugs extending from the actuatingdisc, teeth formed on the multiplyling disc, a mutilated pinionhavingcertain' teeth longer than others andoperatively associated with thediscs and having all the teeth thereof arranged to mesh with thetuati-ng disc periodically to cause a periodic oint movement of thediscs in unison.

5. In pattern mechanism for looms, a pattern chain cylmder, an actuatingdisc having a regular motion, a multiplying disc, a-

transmitter operatively associated with the discs and having a portionalways in engagement with the multiplying disc and movable therewith andhaving another portion normally in engagement with the actuating disc tobe held against motion as said actuating disc moves intermittently, saidtransmitter having other portions to, be engaged by said actuating discto cause a periodic movement of the transmitter and multiplying disc foreach complete movement or the actuating disc, and means associated withthe multiplying disc to connect the pattern chain cylinder and actuatingdisc to cause the same to move in unison.

In testimony whereof we'have hereunto V aifixed our signatures.

LANDRUM EARL BAGWELL, DAVID o. JONES.

